Static analysis can help detect a large number of problems, such as hard-coded sensitive data, various vulnerabilities, bugs, and backdoors. Analyzing the iOS application, we can note useful tools.
An elevation of privilege vulnerability exists in Remote Desktop App for Mac in the way it allows an attacker to load unsigned binaries, aka 'Microsoft Remote Desktop App for Mac Elevation of Privilege Vulnerability'. View Analysis Description.
You might be aware of several security vulnerability scanners for web apps. Here are some of the security vulnerability scanners for mobile apps. Ostorlab – Continuous Mobile App Security Vulnerability Scanner. Ostorlab is capable of scanning both your iOS and Android applications and produce a detailed report on the findings.
Pi-hole is affected by a Remote Code Execution vulnerability. An authenticated user of the Web portal can execute arbitrary command with the underlying server with the privileges of the local user executing the service.
Exploitation of this vulnerability can be automated.
The Pi-hole® is a DNS sinkhole that protects your devices from unwanted content, without installing any client-side software.
Who is affected?
Pi-hole Web interface version 4.3.2 and earlier is affected.
Technical Analysis
https://ameblo.jp/imcanlori1989/entry-12640713440.html. In order to configure its built-in DHCP server, Pi-hole features a Web-based user interface. From there, users can define static DHCP leases to pin an IP address to a given MAC address.
When processing user input in the form of MAC addresses, the application does not adequately validate nor validate this input before reusing it in a shell command.
While a legitimate MAC address format should be as follows:
aaaaaaaaaaaa
The MAC address input can be tampered to execute arbitrary code:
The following excerpt contains the code that is responsible for this vulnerability. Code sections outside the code path used for exploitation were stripped and important lines of code were highlighted for the sake of clarity.
The biggest difficulty in exploiting this vulnerability is that the user input is capitalized through a call to “strtoupper”. Because of this, no lower case character can be used in the resulting injection.
Here, our injection would be capitalized to “PHP -R”. As Linux commands are case sensitive, this would fail, yielding a “sh: 1: PHP: not found” error.
One way to overcome this difficulty is to make use of environment variables and of nightmare-inducing POSIX Shell Parameter Expansions. Note that the “sh” shell is used here.
It is possible to fetch the “PATH” environment variables on the server by postpending “$PATH” to a MAC address on a new static DHCP lease.
Luckily for us, the PATH contains the strings “pihole” and “usr” which in turn contains the “p”, “h” and “r” lower-case characters. Those are the only letters we need to write “php -r”.
For this PATH environment variable, it is possible to define the $P, $H and $R shell parameters that contain their matching lower-case character with the following POSIX Shell Parameter Expansions:
W=${PATH#/???/}
P=${W%%?????:}
X=${PATH#/???/??}
H=${X%%???:}
Vulnerability Analysis Pdf
Z=${PATH#:/??}
R=${Z%%/}
How to move downloaded app on mac. With these shell parameters introduced, our injection can be rewritten as: